Magnetic lift for electrodes in electric oscillators.



G. D. HERROLD.

MAGNETIC LIFT FOR ELECTRODES IN ELECTRIC OSGILLATORS.

APPLICATION FILED MAY 7, 1913.

1,120,306, Patented Dec. 8, 1914.

2 SHEET$SHEET 1.

WITNESS ED INVENTOR fizz/$4 ATTORNEY C. D. HBRROLD.

MAGNETIC LIFT FOR ELECTRODES IN ELECTRIC OSOILLATORS.

APPLICATION FILED MAY 7, 1913.

1,120,306. Patented Dec. 8, 1914.

2 SHEETS-SHEET 2.

1X YENTOR UNITED STATES PATENT OFFICE.

CHARLES D. HERE'OL'D, OF SAN JOSE, CALIFORNIA.

KLGR'ETIC LIFT FOB ELECTRODES IN ELECTRIC OSCILLATOBS.

Application filed Kay 7, 1

purpose of simultaneously lifting a plu-. rality of I electrodes in an oselllatmg circuit,

and also for .the purpose of adjusting the pacing between the electrodes where several e ectric oscillators areinstalled in a circuit.

The invention consists of the parts and the construction and combination of parts as hereinafter more fully described and claimed, having reference to the accompanyin drawings, m whichre 1 1s a side elevation in section showing the application of the invention. Fig. 2 1s a front view, partly in section, and a diagram showing the position of the mechanism with relation to the several apparatus used in wireless transmission. Fig. 3 is a plan view of Fig. 1.

n the operation of a number of high frequency oscillators it has been found that in order to produce uniform persistent undamped oscillations of high frequency, force and efi'ect it was absolutely necessary that the electrodes in each oscillator should be rovided with'separate or inde endent adustments for the urpose of a justing the space between the e ectrod'es in each separate oscillator. This is of great importance as it .is otherwise practical y impossible to produce chronism of oscillation between the severa oscillators in a circuit. The elimination of such independent adjustment between the electrodes will generally ,produce irregular oscillations which become quickly damped with a consequent loss of eficiency, bofand without .an independent adjustment it can'be seen by the e ethat all the oscillators are not working a ike; i. e., the arking between 'the electrodes in each osc' ator is I difierent, and this can only be remedied by 65 an independent adjustment, as .it is found .by observation and practice that each oscil- Specification of Letters Patent.

Patented D00. 8, 1914.

918. Serial llo. 766,097.

lator requires a different distance between the electrodes.

Referring to the drawings: A and B indicate the containers of a pair of submerged oscillators connected in series, and C and C indicate a pair of bracket members or supports which are adapted to be secured to the edges of the containers by any suitable means, or ashere shown by the clamp screws 2.

Suitably secured upon the bracket members C and C are a pair of solenoid lifting magnets 3 and 4, provided with movable cores .5 and 6, which are so positioned as to be lifted in an upward direction when the coils become energized, and which are normally adapted to rest upon brackets 7 when not acted on by the coils. The upward movement of the cores 5 and 6 within the coils is limited, and each core may be independently adjusted by stops 8, formed on the lower ends of adjusting screws 9 and 10, mounted in brackets 11 and 12, suitably secured upon the top portion of the coils 3 and 4. The outer ends of the brackets 11 and 12 are extended a suitable distance, as indicated at 13 in Fi 1 and 3, to form guide members for t e electrodes later to be described.

Centrally and vertically mounted within the containers A and B is a pair of stationary electrodes 14 and 15, and a pair of movable, adjustable electrodes 16 and L7.

The electrodes 16 and 17 are secured on the lower ends of a air of downwardly extending rods 18 and 19, slidably mounted in the guide members 13, while the stationary electrodes are shown as secured u on the lower ends of downwardly exten ing brackets 20, secured at 21 to the main supporting brackets C and C. The brackets 20 may be covered with any suitable form of insulating material, and are also adapted to act as conductors for the stationary electrodes, suitable connections as 22 being provided for this purpose.

Suitably secured on the lower ends of the cores 5 and 6,.or formed integral with same, is a pair of right-angular extending magnetic clutches 23 and 24, provided at their outer ends with openings of sufiicient size to ermit insertion of the electrode carrying re s 18 and 19. The rods 18 and 19 are thus guided at two points, and are also adapted to be lifted by the clutches, as the rods will be instantly magnetically gripped ing screws 9 and 10.

' 6, with connected ma In operation, by referring to Fig. 2 of the drawi s it will be seen that the coils or solenoi s 3 and 4 are connected in series upon the oscillating circuit of the system, and that the oscillators consisting of the stationary electrodes 14 and 15 and movable electrodes 16 and 17 are connected in series u on the oscillating circuit of the system.

he instant the controlling switch, 25 is closed the circuit will be closed throu h the solenoids 3 and 4, and also through t e oscillators. This will immediately energize the coils 3 and 4, and cause the cores 5 and etic clutches 23 and 24, to grip the rods 1 and 19 and lift these in unison with the cores 5 and 6 until the upward limit of ovement of same is reached; this upwar movement being, as before stated, controlled by the adjustable stops 8. The oscillating circuit, being simultaneousl closedby the controlling switch 25, also ecomes operative and sparking will take place betwe'en the electrodes 1416 and 15-17. synchronism of oscillation between the electrodes may be observed by the e e; that is, if the sparking between the e ectrodes in each oscillator is different it is immediately known that synchronism of oscillation is not taking place. This may, however, be instantly remedied by re ulating the adjusting screws 9 and 10 until the sparkin between the electrodes is equalized, thus in 'cating that the desired adjustment has been secured.

The movable electrodes 16 and 17 in ractice are generally formed of carbon an will gradually burn away or shorten by the corrosive action of the arc or spark between the electrodes, so that the carbon electrodes in one oscillator may become shorter than in the other, thereby interfering with and decreasing the efliciency and constancy of the oscillations. Thiswould thus destroy the adjustment previously secured by adjusting the spacing of the electrodes, but may be instantly remedied by simply o ning the controlling switch 25, which wil cause the solenoids to become deenergized and allow the rods 18 and 1 9 with connected electrodes to drop into contact with the stationary electrodes; the rods being released the moment the clutching magnets become dener ized. By closing the controlling switch or clrcuit that .2. It thus becomes for adjusting the lift of the ma through the solenoids 3 and 4, it will be seen t e coils will again become energized with the result that the rods will be instantly gripped and lifted in unison with the cores lnto the adjusted position pre-.

viously secured, thus instantly establishing the desirable or more efficient spacing between the electrodes previously secured by the adjusting screws 9 and 10. c

The apparatus here shown is simple and compact in construction and may be'easily removed as a unit from the containers at any time by releasing the clamping screws I claim and. desire to secure by Letters Patcut is:

1. The combination in a high frequency oscillator, of a lurality of stationary electrodes, a plurality of electrodes mounted to move in relation to the stationary electrodes, rods to, which said movable electrodes are secured, solenoid magnets mounted with relation to said rods, means on said magnets for variably gripping said rods, and means ets.

2. The combination in a big frequency oscillator, of a plurality of stationary electrodes, a plurality of electrodes mounted to move in relation to the stationary electrodes, rods to which said movable electrodes are secured, solenoid magnets mounted with relation to said rods, movable cores mounted with the solenoids, means for adjusting the movement of said cores, and means on the cores for variably engaging the rods to lift the rods in unison with the cores.

3. The combination in a high frequency oscillator, of a plurality of stationary electrodes, a plurality of electrodes mounted to move in relation to the stationary electrodes, rods to which said movable electrodes are secured, solenoid magnets mounted with relation to said rods, movable cores mounted with the solenoids, extensions formed on the lower ends of the cores through which the electrode supporting rods extend which are adapted to variably grip the rods when the possible to remove the solenoids are energized, and means for adjusting the upward movement of the cores with the solenoids. I

4. The combination in a high frequency oscillator, of a plurality of stationary electrodes, a plurality of electrodes inounted to move in relation to the stationary electrodes, rods to which said movable electrodes are secured, solenoid magnets mounted with relation to said rods, movable cores mounted with the solenoids, extensions formed on the lower ends of the cores through which the electrode supporting rods extend which are adapted to variably grip the rods when the solenoids are energized, and adjusting screws for limiting the movement of the cores with the solenoids.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

- CHARLES D.- HERROLD.

W itnesses:

ROY THRIFT, 'J. B. COLLINS. 

